Hey I figured you would like to know I had a crash with the latest fastcraft-1.22-ctest13 test build, without using other performance mods such as Optifine or FPSplus, it was running fine for a minute however when I started flying around quickly it crashed, which upon me restarting and trying it again it was fine and didn't crash a second time, aside from that it works very well, I noticed a big max fps improvement after trying it, at around 150fps (on 1.21) to 300+fps